Re: Arduino UNO after pc reboot sketch is lost
a little googling leads me to believe that your problem is not on the arduino, but that boblight is not properly initializing the com port. uploading the sketch takes care of that. to satisfy yourself that this is true try running the arduino ide and opening the serial monitor, but don't upload the sketch. close the ide and boblight should then be able to talk to the arduino.
sorry, but i can't offer a solution, just help you narrow your search for the problem.
"If I had known it was harmless, I would have killed it myself." - Phillip K. Dick, A Scanner Darkly